diff options
| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2016-11-28 19:03:21 +0100 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2016-12-09 15:13:30 +0100 |
| commit | 8cf868affdc459beee1a941df0cfaba1673740e3 (patch) | |
| tree | 64dd73ba504f458831177e091f90f0324962d226 /kernel/trace/trace_benchmark.c | |
| parent | ring-buffer: Force rb_end_commit() and rb_set_commit_to_write() inline (diff) | |
| download | linux-8cf868affdc459beee1a941df0cfaba1673740e3.tar.xz linux-8cf868affdc459beee1a941df0cfaba1673740e3.zip | |
tracing: Have the reg function allow to fail
Some tracepoints have a registration function that gets enabled when the
tracepoint is enabled. There may be cases that the registraction function
must fail (for example, can't allocate enough memory). In this case, the
tracepoint should also fail to register, otherwise the user would not know
why the tracepoint is not working.
Cc: David Howells <dhowells@redhat.com>
Cc: Seiji Aguchi <seiji.aguchi@hds.com>
Cc: Anton Blanchard <anton@samba.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_benchmark.c')
| -rw-r--r-- | kernel/trace/trace_benchmark.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/trace/trace_benchmark.c b/kernel/trace/trace_benchmark.c index 0f109c4130d3..f76d0416dd83 100644 --- a/kernel/trace/trace_benchmark.c +++ b/kernel/trace/trace_benchmark.c @@ -164,11 +164,12 @@ static int benchmark_event_kthread(void *arg) * When the benchmark tracepoint is enabled, it calls this * function and the thread that calls the tracepoint is created. */ -void trace_benchmark_reg(void) +int trace_benchmark_reg(void) { bm_event_thread = kthread_run(benchmark_event_kthread, NULL, "event_benchmark"); WARN_ON(!bm_event_thread); + return 0; } /* |